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ATENT OFFICE.

F F. E. oLIvEE, oF NEw YORK, N. Y.

`COMBINATION OF PENCIL SLEEVE AND ERASER.

Specication forming part of Letters Patent No. 35.467 dated June 3,1862.

To all whom it may concern:

-Be it known that I, F. E. OLIVER, of the city, county, and State of NewYork, haveinvented certain new and useful Improvements in Pencil Sleevesand Erasers Combined; and I do hereby declare that the following is afull, clear, and exact description of the same.

The greatest'inconvenience arising fromthe use of lead-pencils consistsin the liability of the point of the pencil toV break off, necessitatingfrequentsharpening, which, besidescon suming much time and requiring thecarrying about of an-auxiliary instrument to sharpen the pencil, iswasteful, since most of the pencil is used up by cutting away its woodparts in order to renew the point on the lead.

Many improvements have been suggested, invented, and used havingfortheir object the protection ofthe brittle point in pencils, and theyconsisted, mainly, in the employment of a case with which is combinedsome device for pushing out from or back into the case the lead it is tocontain. These cases, generally made of gold, silver, rubber, wood, orother hard substance, are costly, heavy, and unt to be used inconnection with the ordinary leadpencil, (strengthened by a'woodenenvelope,) but require the pencil to be used therewith to beespeciallymade for them, which, being unsupported by a wooden case, are ofnecessity brittle and consequently not liable to be sharpened.

\ The object of my invention is twofold-li rst, to protect the point oflead-pencils, so as to allow of the pencil beingu'carried about onesperson without breaking the point, thus avoiding the annoyance ofsharpening the 4point nearly every time it is brought into use; second,to afford at the same time the means for erasing or effacingpencil-marks; and l have accomplished `this by a single deviceconsisting of a sleeve made of an india-rubber compound that,whilehaving the adhesiveness and grittiness necessary to adapt it to the useof an eraser, shall preserve its elasticity, said sleeve being of adiameter to grasp the wooden envelope of the pencil with gentlepressure, so as to allow of its being slid upon and along the pencil,yet hold ontol the pencil with sufficient rmness to cause it to Vremainin the position it is `placed unless purposely removed therefrom. y

In the accompanying drawings, I have rcpresented in Figs. l, 2, and 3 anelevation, horizontal and vertical sections of my pencil sleeve anderaser combined. In Figs. 4 and 5 I have shown my improvement adapted toa pencil.

rIhe device, it will be seen, is shown to consist of a sleeve of anoutside oblong or ovoidal form, a cylindrical opening passing throughthe middle and concentrically with its longer axis. It is made in moldsor otherwise in any manner as convenient or well known torubber-manufacturers, and it is composed of a vulcanizable elasticrubbercompound, with which may be incorporated a line gritty substance. I makethese sleeves of various internal diameters, lengths, and thicknesses,so as to suit pencils of differnt dimensions and to protect pointswrought upon them more or less elongated. The sleeveis put on over thepoint, as shown in Fig. 4. It may thus be carried about ones person inpockets or otherwise without danger of the point breaking. When it isdesired to use the pencil, it is simply necessary to push the sleevenpon the pencil, as shown in Fig. 5, when the sleeve may answer thepurpose of an eraser.v

I am aware that rubber-tipped pencils have been used, but the tip beinga permanent attachment or iixture to the pencil, it affords noprotection to the point of thepencil. I therefore do not claim therubber-tipped pencil; nor do I wish to be understood as confining myselfto the precise form or shape described, itbeing obvious that withdifferent forms of pencils-suoli as iiat, round, or polygonal,&c.-`differentshaped sleeves are 0r may be used; but

What I claim as an article of manufacture The combined sleeve anderaser, constructed to operate substantially in the manner and for thepurposes specified.

In testimony whereof I have signed my name to this specification beforetwo subscribing witnesses.

F. E. OLIVER.

Witnesses:

J oIN MAOKENZIE, BENJ. F. LEE.

